Error : DATASET_REOPEN

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Hi Friends,

In my BSP Application , I uploaded files in one BSP Page , and displaying it in other BSP page. it is working fine for display. But when I press the same link "Select a row to show the file" for <b>twice</b> it is throwing up an error like this.

Following error text processed in system:

<b>An exception with the type CX_SY_FILE_OPEN occurred, but was neither handled locally, nor declared in a RAISING clause</b>